Smile. It confuses people who wish you to be unhappy.
I am a kind of paranoiac in reverse. I suspect people of plotting to make me happy. — J.D. Salinger
1) You'll be more creative.
2) You'll be more attractive.
3) It will improve your mood.
4) Smiling can prevent bank robberies. Seriously.
5) How can you improve your smile? Smile slower.
Props Given:
1
On the other hand, you shouldn't smile all the time, right?
If you do that, people wonder what you're thinking about.
Occasionally throw a smirk in there...
I don't like to smirk. I'd rather just go to neutral. :)